Why this code cause an error?

Question

I want to take int or double input from user and make circumference formula of circle and give this output.
https://code.sololearn.com/cTKwrQkLM1cc/?ref=app

Answer 1

You are taking the input as a string and want it as a double. You need to to change/convert the input. Check it out in the C# course.

Lesson 5.1.